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soc: fsl: cpm1: qmc: Introduce qmc_chan_count_phandles()
No function in the QMC API is available to get the number of phandles present in a phandle list. Fill this lack introducing qmc_chan_count_phandles(). Signed-off-by: Herve Codina <herve.codina@bootlin.com> Link: https://patch.msgid.link/20240701113038.55144-9-herve.codina@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -1777,6 +1777,19 @@ static struct qmc_chan *qmc_chan_get_from_qmc(struct device_node *qmc_np, unsign
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return qmc_chan;
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}
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int qmc_chan_count_phandles(struct device_node *np, const char *phandles_name)
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{
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int count;
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/* phandles are fixed args phandles with one arg */
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count = of_count_phandle_with_args(np, phandles_name, NULL);
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if (count < 0)
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return count;
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return count / 2;
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}
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EXPORT_SYMBOL(qmc_chan_count_phandles);
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struct qmc_chan *qmc_chan_get_byphandles_index(struct device_node *np,
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const char *phandles_name,
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int index)
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@ -16,6 +16,8 @@ struct device_node;
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struct device;
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struct qmc_chan;
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int qmc_chan_count_phandles(struct device_node *np, const char *phandles_name);
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struct qmc_chan *qmc_chan_get_byphandles_index(struct device_node *np,
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const char *phandles_name,
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int index);
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